I can make a circle road. I use the shift key to make it an equal roundness.
My problem is trying to make another road outside or within that circle. It is rarely anywhere near going inside or outside of it. Usually it is trying to make a half overlap circle offset to a side (like the olympic symbol).
I have tried placing my cursor in various places. I can't seem to find the formula.
What is a procedure for making easily making a donut road?